/*
 * Copyright (c) 2008 VMware, Inc.
 * Copyright (c) 2009 John Pritchard, WTKX Project Group
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package wtkx.wtk;

import wtkx.io.FileList;
import wtkx.wtk.media.Image;

import java.io.IOException;
import java.net.URL;

/**
 * Interface representing a "manifest". Manifests are collections of data used
 * in clipboard and drag/drop operations.
 * <p>
 * TODO In the future, we may want to make this an abstract base class and
 * add a SerializerDictionary that maps keys to Serializers. Local manifests
 * can use the dictionary to write data out to the native OS, and remote
 * manifests can do the opposite. We'll still need a means of mapping value
 * keys to native IDs (which we would need to do via MIME types if the system
 * is based on AWT's DnD mechanism).
 *
 * @author gbrown
 */
public interface Manifest {

    public String getText() throws IOException;
    public boolean containsText();

    public Image getImage() throws IOException;
    public boolean containsImage();

    public FileList getFileList() throws IOException;
    public boolean containsFileList();

    public URL getURL() throws IOException;
    public boolean containsURL();

    public Object getValue(String key) throws IOException;
    public boolean containsValue(String key);
}
